target/ppc: larx/stcx generation need only apply DEF_MEMOP() once

Use DEF_MEMOP() consistently in larx and stcx. generation, and apply it
once when it's used rather than where the macros are expanded, to reduce
typing.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
1 file changed